Same thing happens to me on my V6 occasionally, however, it's usually more a resultant of how I use the clutch pedal. Seriously. See if it still chatters when you lift the pedal up more gently than your ordinarily would, using more gas. At least give that a shot before going through the trouble of replacing your clutch.
For the most part, on a daily driver, you should not have to swap a clutch out in only two years.
Oh, and if you do decide to go ahead and change the clutch, make sure to have the flywheel resurfaced, for it may in fact be a scored or warped flywheel causing the chatter.... Also, make sure you replace your pilot bearing, for this get/borrow a good pilot bearing puller.
Oh yeah, one more thing, replace the rear mail oil seal too.
